If you're a Google Chrome user (the browser, I mean) and use Imgur for your image hosting, you might try it. It's more light weight than ZUploader.
Google search "Chrome Web Store," once there, search for "Imgur Uploader."
It stays in the "Send to" area of your context menu for image files.
Since SC utilizes an actual file browser on the left of the main window, you can right-click one of the images and access the 'Send to' menu from right inside the SC main work area
Also it works from within Windows Explorer, xplorer2, etc.